/**
 * Copyright 2011 Adrian Witas
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.abstractmeta.commandify.core.command;

import org.abstractmeta.commandify.Commandify;
import org.abstractmeta.commandify.command.Command;

import java.util.Collection;

/**
 * Represents AbstractCommand
 *
 * @author Adrian Witas
 */
public abstract class AbstractCommand<T> implements Command<T> {

    private final Object source;

    protected AbstractCommand(Object source) {
        this.source = source;
    }


    public Object getSource() {
        return source;
    }


    protected <T> T getCommandValue(T instance) {
        if (instance == null) return null;
        if (instance instanceof Commandify) {
            @SuppressWarnings("unchecked")
            Commandify<T> commandify = Commandify.class.cast(instance);
            T result =  commandify.getCommands().apply();
            return result;
        }
        return instance;
    }


}
